2018 Infiniti Q50 problems, complaints & recalls
Updated from NHTSA data · How we count
Owners have filed 33 complaints with NHTSA about the 2018 Infiniti Q50, most often about engine. There are 3 recalls for this model year.
- Complaints
- 33
- Recalls
- 3
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Median mileage
- 54,000 mi at time of problem
Key facts
- Engine is the most-reported problem area, named in 14 of 33 complaints (42%).
- Airbags (9) and electrical system (6) follow.
- Half of the complaints that list mileage happened before 54,000 mi.
- The 2018 Infiniti Q50 has 3 recalls on file.
- It ranks 4th of 10 Infiniti Q50 model years by our severity-weighted complaint score (1st = worst).
- That is 35% fewer complaints than the 2017 model year (51).
2018 Infiniti Q50 problems by category
- Engine14 complaints
- Airbags9 complaints
- Electrical System6 complaints
- Fuel, Hybrid & EV Propulsion5 complaints
- Other / Unknown5 complaints
- Driver Assistance & Safety Tech4 complaints
- Transmission & Drivetrain3 complaints
- Seats & Seat Belts2 complaints
- Brakes2 complaints
- Steering1 complaints
- Acceleration & Cruise Control1 complaints
A complaint can mention more than one problem area, so categories add up to more than the total.
Most-reported components
| Component (as filed with NHTSA) | Complaints |
|---|---|
| Engine | 13 |
| Air bags | 9 |
| Unknown or other | 5 |
| Electrical system | 5 |
| Fuel/propulsion system | 5 |
| Power train | 3 |
| Engine and engine cooling | 2 |
| Back over prevention: sensing system: camera | 2 |
When problems happen (mileage)
2018 Infiniti Q50 recalls (3)
- POWER TRAIN:DRIVELINE:DRIVESHAFT
Nissan North America, Inc. (INFINITI) is recalling certain 2011-2013 M56, 2012-2013 M35 Hybrid, 2014-2018 Q50, Q70 Hybrid, 2014-2019 Q70, and 2015-2019 Q70L two-wheel drive vehicles. The driveshaft can fatigue and break.
Risk: A broken driveshaft can result in a loss of drive power, or a vehicle roll away when the vehicle is in park without the parking brake applied. Both scenarios can increase the risk of a crash.
Remedy: Dealers will replace the driveshaft, free of charge. Owner notification letters were mailed August 13, 2024. Owners may contact INFINITI's customer service at 1-800-662-6200. INFINITI's numbers for this recall are R24A5 and R24A7.
- BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
Nissan North America, Inc. (Nissan) is recalling certain 2018-2019 Nissan Altima, Armada, Frontier, Kicks, Leaf, Maxima, Murano, NV, NV200, Pathfinder, Rogue, Rogue Sport, Sentra, Titan, Titan Diesel, Versa Note and Versa Sedan vehicles, as well as Infiniti Q50, Q60, QX30 and QX80 vehicles. Additionally included are 2019 Nissan GT-R and Taxi and Infiniti QX50, QX60, Q70, Q70L vehicles. The back-up camera and display settings can be adjusted such that the rear view image is no longer visible and the system will retain that setting the next time the vehicle is placed in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."
Risk: The lack of an image in the back-up camera display increases the risk of a crash.
Remedy: Nissan will notify owners in phases, having dealers update the back-up camera settings software, free of charge. The recall began November 11, 2019 and all affected VINs should be activated. Owners may contact Nissan customer service at 1-800-867-7669 or INFINITI customer service at 1-800-662-6200.
- ELECTRICAL SYSTEM:SOFTWARE · FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
Nissan North America, Inc. (Nissan) is recalling certain 2016-2018 Infiniti Q50 and 2017 Infiniti Q60 vehicles equipped with a 2.0L engine. Incorrect Fuel Pump Control Module (FPCM) software may allow the fuel level in the main tank to be too low to supply fuel to the engine, causing the engine to stall while driving.
Risk: An engine stall can increase the risk of a crash.
Remedy: Nissan will notify owners, and Infiniti dealers will reprogram the Fuel Pump Control Module (FPCM) with corrected software, free of charge. The recall began August 29, 2017. Owners may contact Infiniti customer service at 1-800-662-6200.
Recent 2018 Infiniti Q50 complaints
Excerpts of the newest owner complaints, lightly cleaned of personal details. Complaints are unverified owner reports.
- Filed Jul 7, 202634,000 miSCAirbagsSeats & Seat Belts
The contact owns a 2018 Infiniti Q50. The contact stated while driving at an undisclosed speed, the air bag warning light illuminated. The vehicle was taken to the dealer, where the contact was informed that the front passenger seat and passenger seat belt needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 34,000.
NHTSA complaint #11748898 · source - Filed Jun 8, 202659,200 miFLAirbags
The contact owns a 2018 Infiniti Q50. The contact stated that while driving at an undisclosed speed, the front passenger Occupant Classification System (OCS) sensor became inoperable. The vehicle was taken to the dealer, where it was diagnosed that the front passenger OCS sensor had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 59,200.
NHTSA complaint #11742781 · source - Filed May 5, 2026NYDriver Assistance & Safety TechElectrical System
I am submitting this complaint regarding a safety defect in my 2018 Infiniti Q50, which was manufactured prior to May 1, 2018. Despite matching the make, model, and production timeframe associated with an existing Infiniti recall for backup camera failures, my specific vehicle is not included in the recall population. The backup camera in my vehicle intermittently fails to display an image or presents a blank or distorted screen when the vehicle is placed in reverse. This…
NHTSA complaint #11735910 · source - Filed Mar 19, 202654,000 miCAElectrical System
Odometer Fraud. The contact purchased a 2018 Infiniti Q50. It was discovered that there were three separate mileage discrepancies. The vehicle was a dealer sale. At the time of purchase, the vehicle mileage was 50,370; however, at the time of registration, it was discovered that the mileage had been rolled back from 54,000 to 28,630 miles. The mileage before the vehicle was purchased was 47,650.
NHTSA complaint #11725568 · source - Filed Jan 7, 2026CAEngineFuel, Hybrid & EV PropulsionTransmission & Drivetrain
Filing this complaint regarding a safety-related defect involving the turbocharger system on my 2018 INFINITI Q50. The vehicle has approximately 46,000 miles and is 8 years old. INFINITI/Nissan has acknowledged through its own Technical Service Bulletins (TSBs) that turbocharger failure on 2016–2018 Q50 3.0T vehicles is a known defect. Nissan’s documentation identifies issues such as turbo oil seal leaks, reduced engine power, smoke, and potential catastrophic engine…
NHTSA complaint #11709489 · source - Filed Nov 28, 2025GAEngineOther / Unknown
The serpentine belt on my 2018 Infiniti Q50 Sport became contaminated with oil immediately after dealer turbo replacement at the end of August 2025, causing the belt to slip, shred, and be pulled into the engine. This resulted in sudden loss of essential engine functions and poses a significant safety hazard. This failure was caused by improper repair at the dealership.”
NHTSA complaint #11701863 · source - Filed Oct 15, 202588,000 miNYBrakesEngine
The contact's son owns a 2018 Infiniti Q50. The contact stated that soon after purchasing the vehicle, there was an abnormal screeching sound coming from the brakes while depressing the brake pedal. There was no warning light illuminated. The contact's son took the vehicle to an independent mechanic to have the brake pads and rotors replaced. However, less than one month after the replacement of the pads and rotors, there was an abnormal grinding sound coming from the front…
NHTSA complaint #11693654 · source - Filed Oct 8, 2025AZAirbags
The airbag/srs light is on. I've read on multiple forums that this is a common occurrence with this model and year of Infiniti. It did not come on as a result of any accident/incident.
NHTSA complaint #11692169 · source
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Other 2018 Infiniti models
Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data, as of Oct 11, 2026. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology